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KMID : 0364920060310030123
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Journal of Radiation Protection and Research
2006 Volume.31 No. 3 p.123 ~ p.128
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Development of the ZnS(Ag)/BC-408 phoswich detector for monitoring radioactive contamination inside pipes
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Kim Gye-Hong
Park Chan-Hee
Jung Chong-Hun
Lee Kune-Woo
Seo Bum-Kyoung
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Abstract
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A small radiation detection system is necessary for the direct characterization of alpha/beta-ray contamination inside pipes generated during the decommission of a nuclear facility. In this work, the new type phoswich detector consisting of the ZnS(Ag) and plastic scintillator for ${\alpha}/{\beta}$ simultaneous counting was designed as part of a development of a equipment capable of monitoring radiological contamination inside pipes. The optimum counting conditions in dimensions of scintillator and a detection system were experimentally confirmed and a performance of alpha/beta-ray discrimination was evaluated. As a result, optimum conditions of a detector suitable for monitoring radiological contamination inside pipes and a feasibility of application to pipe-inside were confirmed.
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KEYWORD
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contamination level inside pipe, phoswich detector, alpha/beta-ray discrimination, scintillator
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